/*
 * Copyright (C) 2019 Apple Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include "HashFunctions.h"
#include "HashTraits.h"
#include "Hasher.h"

namespace PurCWTF {

template<typename T, size_t inlineCapacity>
struct VectorHash {
    static unsigned hash(const Vector<T, inlineCapacity>& vector)
    {
        IntegerHasher hasher;
        for (const auto& value : vector)
            hasher.add(DefaultHash<T>::Hash::hash(value));
        return hasher.hash();
    }
    static bool equal(const Vector<T, inlineCapacity>& a, const Vector<T, inlineCapacity>& b)
    {
        return a == b;
    }
    static constexpr bool safeToCompareToEmptyOrDeleted = true;
};

template<typename T, size_t inlineCapacity>
struct DefaultHash<Vector<T, inlineCapacity>> {
    using Hash = VectorHash<T, inlineCapacity>;
};

}
